Stamp vending machine



1952 c. M. GOTTSCHAU STAMP VENDING MACHINE l0 Sheets-Sheet 1 Filed Dec. 15, 1945 FIG. 2

INVENTOR CHRISTIAN M. GOTTSOHAU BY QQQM'A cum A WMA ATTORNEYS 1952 c. M. GOTTSCHAU 2,581,323

STAMP VENDING MACHINE Filed Dec. 15, 1945 10 Sheets-Sheet 2 FIG. 3 FIG. 4

INVENTOR CHRISTIAN M. GOTTSGHAU 1952 c. M. GOTTSCHAU STAMP VENDING MACHINE 10 Shets-Sheet Filed Dec. 15, 1945 lNVENTOR HRISTI I N M. GOTTSGHAU ATTORNEYS Jan. 1, 1952 M gg s 2,581,323

STAMP VENDING MACHINE Filed Dec. 15, 1945 l0 Sheets-Sheet 4 ISBIEO FIG. 6 I

INVENTOR M. GOTTSQHAU ATTORNEYS 1952 c. M. GOTTSCHAU STAMP VENDING MACHINE 10 Sheets-Sheet 5 Filed Dec. 15,.1945

INVENTOR CHRISTIAN M. GOTTSOHAU ATTORN EYS Jan. 1, 1952 c. M. GOTTSCHAU STAMP VENDING MACHINE 1 0 Sheets-Sheet 6 Filed De c. 15, 1945 FIG. 8

INVENTOR CHRISTIAN M. GOTTSOHAU mo -x mi ATTORN EYS c. M. GOTYTSCHAU 2,581,323

Jan. 1, 1952 STAMP VENDING MACHINE l0 Sheets-Sh e: 7

Filed Dec. 15, 1945 86 km H V j figfi \%1 J 88 75"? 92 FIG. 9 I42 aux FIG. IO 67 FIG. ll

lNVENTOR GSQISTIAN M. GOTTSGHAU Jan. 1, 1952 c. M. GOTTS CHAU STAMP VENDING MACHINE 1o Sheets-Sheet 8 Filed Dec. 15,, 1945 INVENTOR CHRISTIAN M. GOTTSGHAU BY M Quin Ha ATTORN EYS Jan. 1, 1952 v c. M. GoTTgHAu 2,581,323

STAMP VENDING MACmE 10 Sheets-Sheet 9 Filed Dec. 15, 1945' FIG. /9 FIG. 20

INVENTOR CHRISTIAN M. GOTTSGHAU Jan. 1, 1952' c M. GOTTSCHAU STAMP VENDING MACHINE Filed Dec. 1945 10 Sheets-Sheet 1Q wON nON

. VQON R \& w 1|. 0.0m M m E O E. g m m m A ,K. T A

n 3 s M Patented Jan. 1, 1952 UNITED STATES PATENT OFFICE STAMP VENDING MACHINE Christian M. Gottschau, Rochester, N. Y., as-

signor to Commercial Controls Corporation, a corporation of Delaware Application December 15, 1945, Serial No. 635,342

14 Claims.

practical, and thoroughly durable. Another obmoved and others broken away to more clearly ject is to provide a new and improved machine of show the mechanism;

the above character. Another object is to pro- Figure 8 is a vertical section on an enlarged vide a machine of the above character which is scale taken on the line 8-8 of Figure 3; entirely automatic in operation. Another object Figure 9 is a horizontal staggered section on a is to provide a machine of the above character 10 slightly enlarged Scale taken on the line of in which the structural elements are so disposed ur as to attain a high degree of strength without Figure 10 is a vertical staggered section on a heavy construction. Another object is to provide Slightly enlarged scale taken on the line Ill-I0 of a machine of the above character which is comg e pact and occupies a minimum of space. Still an- Figure 11 s a p w Of e bottom o e o other object is to provide a machine of the above the vending units taken from the direction of the character which is accurate and efiicient in operline I i-l I on Figure ation. A further object is to provide a machine of Figure 12 is a rear view of the clutch mechathe above character by the use of which a maxinism shown in Figure 7 taken from the direction mum of vending transactions may be made in a oflihe l2 of Figure minimum of time. A still further object is to i r 13 i a horizontal ion taken n the provide a machine of the above character in li e |3|3 f F e which adequate safeguards are provided to pre- Figure 14 is a horizontal section taken on the vent the issuance of stamps in excess of the line l4l40f Figure 12;

amount purchased by the customer in ca the Figure 15' is a vertical staggered section taken mechanism of the machine breaks down through 11 t e |5l5 o re misuse or for other reasons. Other objects Will Fi ure 6 is a ver i l secti n ken n the li be in part obvious and in part pointed out herel6!5 o Figure inafter. Figure 17 is a vertical section on an enlarged The invention accordingly consists in the fea- Scale taken through he stamp feeding mechatures of construction, combinations of elements, nism taken on the 1ine f of Figure 3; l and arrangements of parts, all as will be illustra- Figure 18 f slmllar mi 17 Wlth tively described herein, and the scope of the apcerpam parts. m dlfiererit relatwe posltlons' plication of which will be indicated in the fol- 19 IS an of the Stamp feeding low-mg claims rin echtamsn} lshowgr II'IIQITIEIIFI'IB 18 ltaken from the irec 1on0 me 1n igure f p to the f i Figure 20 is a horizontal section taken on the in WhlCh 18 shown one of the various possible emline of Figure 6; and Documents 9 Figure 21 is a diagrammatic showing of the f 1 1s perspecm'e of the Vending 40 electrical circuit for the vending machine. m Similar reference characters refer to similar Fi re 2 is a vertical section taken on the line parts throughout the several views of the draw- 2-2 of Figure 1; ings Figure 3 is a front elevation of the vending ma- Referring to Figure 1, the vending machine, chine shown in Figure 1 having the door regenerally indicated at Ill, includes a housing H moved; having a door l2 mounted thereon by hinge 13.

Figure 4 is a view similar to Figure 3 from 1 l2 opens upwardly to provide access to the which the two stamp vending units have been inside of h u in a d a lo e r lly iremoved; cated at I4 (Figures 1 and 2) is provided to lock Figure 5 is a side elevation of one of the vend- 0 door I2. For the user of the machine there are ing units shown in Figure 3 partly in section and two coin slots 15 and It for receiving coins for taken from the right-hand side of one of the he purcha of postage ne of hese sl 1 in units as viewed in Figure 3; the present machine is provided to receive dimes Figure 6 is a side elevation of one of the vendfor which five 2-cent stamps are automatically ing units shown in Figure 3 showing the opposite 2 side of the vending unit from that shown in Figure 5;

Figure '7 is a view on an enlarged scale of the lower portion of Figure 5, certain parts being re delivered through vending opening I l. The other coin-receiving slot is: is for receiving a nickel for which the purchaser receives five 1-cent stamps delivered through vending opening 18. Below openings [l and i8, openings I9 and are provided by which coins are returned if when being tested in the machine they prove to be spurious.

Within this machine two units, generally indicated at 2! and 22 (Figure 3), are provided for vending Z-cent and l-cent stamps. The members on these machines having coin slots l5 and I5, vending openings I7 and I8, and coin return openings I9 and 2t therein extend through holes 23a, 23b, 24a, 24b, 25a, and 25b-in door I2 (Figures 1 and 2). The vending unit 2 I' and: 22 (FigureB); are so constructed that they are entirely automatic so that after the user dropsacoin in either of the coin slots I5 and I6, stamps are automatically delivered through openings H and I8if the.

coins are not spurious. If the coins are spurious,

they are automatically returned through coin return openings I5 and 23.

Vending units 2 I' and 22 (Figure 3) are detachably mounted upon telescoping tracks 25 and 2? above coin boxes 28 and 29 which are provided with locks 38 and 3I. Tracks 25 and 2'! permit either of the units to be pulled partially out of housing II for reloading stamps, inspection purposes, and for taking meter readings, and if desired, a locking connection (not shown) between either of tracks 26 and 2'1 and each unit may be operated to permit the removal of either unit from. its track and thus the housing. The motive power for both units is provided by a motor 32 (Figure 4) mounted on the rear wall 33 of housing I I. Motor 32 through reduction gearing contained in housing 36 drives a sprocket gear 35. Sprocket gear through link chain 31 (Figures 2 and 4) drives shaft 34 through a sprocket gear 38. A roller 35 is rotatably mounted on an arm which in turn is pivotally mounted on the rear wall 33 of housing I i by a bracket ll and roller 39 is resiliently urged against chain 3.! by a spring (not shown) to insure the maintenance of driving relationship between the sprocket chain and the sprocket gears. shaft 34 has a pair of gears 42 and 13 mounted thereon which drive units 2I and 22 (Figure 3) respectively.

Portions of the electrical circuit of each unit are mounted upon the rear wall 33.01v housing [I including apair of relays 25d and 26 3 Each unit has a plate similar to plate as (Figure 2) mounted on the rear of the casting forming its framework, and these plates have contact points 203 thereon which engage contact points 252. mounted on resilient members 45 mounted on the rear wall 33 of housing I I. When a unit is slid. in onits telescoping track into the housing, the contact points on the plates mounted on each unit contact the contact points 252 on the resilient members mounted on the rear wall, thus establishing electrical connection with the portion of the electrical circuit mounted on housing I I.

As units 2| and 22 (Figure 3) are similar in construction, detailed description of the construction and operation of the units will be limited to unit 2|. Unit 2! includes coin testing mechanism, generally indicated at 45 (Figures 3 and 5). Any suitable and practical coin testing mechanism may be used, the particular coin testing mechanism shown in this application being shown and described in my copending application for Coin Testing Mechanism filed December 15, 1945, and bearing Serial No. 635,341, now abandoned. Coin testing mechanism 46 includes a relay operated shutter, generally indicated at 41 iii) (Figure 21), the operation of which is controlled by the coin switch, generally indicated at 48. which forms a part of the stamp vending mechanism, generally indicated at 50, all as will be described more fully hereinafter. Coin testing mechanism 56 has two chutes 5| and 52 (Figure 5) through which coins leave the coin testing mechanism. Coins passing downwardly through chute 5I are reject coin or spurious ones, and coins passing downwardly through chute 52 are genuine ones. As coin testing mechanism 46 includes two parallel flat plates 49 and 53 which are spaced from each other a distance slightly greater than the width of the coin being tested, coins passing out of the coin testing mechanism 55 through chutes 5i and 52 are on edge when they drop into the stamp vending mechanism 50. Reject coins drop downwardly through the stamp vending mechanism in a chute 54 (Figure 5 and 7) into a coin. return box, generally indicated at 55, from which the user may obtain his. coin through opening I 9 (Figure l In general, when a genuinecoin. drops from chute 52 into switch 48, an electrical connection is established so that motor 32 (Figure 4) is placed in operation. At the same time a solenoid, gen erally indicated at 56, is actuated to trip the clutch mechanism, generally indicated at 51. Clutch mechanism 51, which is of the single revolution type, drives shaft 58 (Figure 5), which; acting through sprocket gears 59 and 60 and link chain SI, drives the stamp feeding mechanism, generally indicated at 52, to feed stamps through opening Il (Figure 1). At the same time, clutch mechanism 5? acts through cam IIO (Figure 8), the bellcrank, generally indicated. at 54, link 65, and arm to release the coin in, coin switch 48 (Figure 5) and to close a switch, generally indicated at 61 (Figure, 8) to maintain the electrical circuit to motor 32 during a cyclical operation.

A coil of stamps 69, is mounted on a reel 10 which in turn is rotatably mounted on wall II of the casting forming the framework of the vending unit. The stamp strip from coil 69 passes downwardly under a roll 12, also rotatably mounted on wall TI, and thence upwardly into the stamp feeding mechanism 62. To prevent the operation of the unit after the coil of stamps has been exhausted, feeler mechanism, generally indicated at 13, is provided, which controls the operation of switch 68 so that when the stamps are exhausted, the circuit to, coin shutter i! (Figure 5) is broken, thus causing it to move to a closed position preventing. users from inserting any more coins in the unit.

Coin switch 48 (Figure 5) which controls. the operation of vending mechanism 50 is mounted in a pocket in the casting, generally indicated a (Figure 8), which forms the framework of the stamp vending mechanism. This pocket includes end walls H and 18, a bottom. 19, and a side wall 38 (Figure 9). The coin switch includes a pair of metal contact members #4 and (Figures 5, 7, and 9) which are mounted on a block 51 made of an insulating material such as Bakelite. Block it forms the other side wall of the pocket, is of rectangular shape, and is secured to end walls i1 and I8 (Figures 7 and 9) of the pocket by screws 82. The outside face of block 8! is recessed at 83 to provide a track 64 through which coins pass into and out of the coin switch. A block 85 (Figures 5 and 9) of clear plastic material is secured to the outer face of block 82 by screws 89 and the inside face 81 of an inwardly extending portion of block 85 forms the outside wall of track 84.

' Contact member I4 is mounted in a portion 88 of recess 83 in a vertical position and is secured to block 8I by screws 89 (Figures 7 and 9). Contact member I5 is mounted on and connected to a shaft'90 which in turn is pivotally mounted within a bearing 9|. Bearing 9I is mounted in a bore extending through an inwardly extending hub portion 8 la of block 8 I. Thus contact member I5 is free to pivot with respect to block 8|. Movement of contact member I5 to the left and right, as viewed in Figure '7, is limited by side walls 92 and 93 (Figures 7 and 9) of the recess within which the contact member is mounted. A lever 94 (Figures 8 and 9) has a metal hub 940 through which shaft 90 passes. Hub 94c is pinned to shaft 90 by pin 94d. Lever 94 is biased in a counterclockwise direction, as viewed in Figure 8, by a spring 95 which is connected to a lug 94a formed on lever 94 and to a pin 98 mounted on the inner face of block 8I. Thus'spring 95 acting through lever 94, hub 94c, pin 94d (Figure 9), and shaft 90, resiliently holds the lower end of contact member I5 in contact with the left-hand side wall 93 (Figure 7) of the recess within which the contact member 15 is positioned.

j' Referring to Figure 7, it will be noted that contact member I4 is vertically positioned along one edge of track 94 and that contact member 15 when in contact with side wall 93 is at an angle to contact member I4. This makes the Width of the track 84 diminish in a direction toward the bottom of the contact members. The contact members I4 and I5 when positioned as shown in Figure 7 are in the position they occupy when a coin enters track 84, and they are spaced asuflicient distance apart so that the coin is stopped by the contact members in the position indicated by the broken circle 99. The opposed edges of contact members 14 and I5 (Figures 7 and 9) have V-shaped grooves 91 and 98 therein which form a portion of the side walls of track 84. Thus a coin when its edges engage contact members I4 and I5 contacts each member at at least two points through its edges. Because of the fact that the coin is falling free as it passes down track 84 toward the contact members and because contact member 15' (Figure '2) is resil iently urged toward the left, the contact members are slightly spread on the impact of the coin, thus forcing the edges of the coin into excellent contact with each V-shaped groove.

When a coin establishes contact between metallic contact members I4 and I5, motor 32 starts and solenoid 58 is energized. This solenoid when energized trips the clutch mechanism 51 (Figure 8) to feed stamps from stamp vending opening I1 (Figure 1) as described above. The mechanism of clutch 51 which is of the single revolution type is mounted between two parallel plates I and IOI (Figures 7, 8, and 12). These plates are connected to the rear wall I02 (Figure 8) of casting I8 through flanges I03 and I84 (Figure 14) formed on side walls I90 and I8I. Plates I99 and IOI are connected by an integral top portion I05 (Figures 12 and 15). Drive shaft 53 (Figures 12 and 13) is rotatably mounted on side plates I00 and I0! by a. pair of bearing members I08 and I 01. Intermediate walls I90 and HM (Figure 13) a gear I98, a ratchet wheel I99, cam I I0, and a trip cam I I I are mounted on shaft 58. Gear I08 is mounted on and secured to the hub 109a of ratchet wheel I09 which is rotatably mounted on shaft 58. Cam H0 and trip cam II I are mounted on and secured to a bushing II2 pinned to shaft 58 by taper pin II3. When unit 2| is mounted in housing II (Figures 3 and 7) gear I08 meshes with gear 42 mounted on shaft 34, and thus gear I08 is directly driven by motor 32.

During each cyclical operation a driving connection is established between ratchet wheel I09 and cam IIO by a pawl II5 (Figures 13 and 15). This pawl when the mechanism is in rest position is held out of engagement with ratchet wheel I09 by an interponent, generally indicated at I I6. Interponent II 8 is mounted on'shaft II! by a pair of ears H8 and II9 (Figures 12 and 15). Interponent II8 includes a downwardly extend ing arm I20 which is mounted on the portion of interponent II6 connecting ears H8 and I99 and which when the machine is in rest position is positioned so that its lower edge I20a engages the rear end 511 of pawl I I5. interponent II6 has another arm I2I (Figure 16) extending forwardly in the machine and having two separate leg portions I2Ia and I2Ib. Movement of the interponent in a clockwise direction, as viewed in Figure 16, is limited by the engagement of the upper end of leg I 2Ia with a spacing rod I22 (Figures 14 and 16) extending between and secured to plates I00 and !UI.

When solenoid 58 (Figure 15) is actuated because of the presence of a coin in coin switch 48, the armature I23 of solenoid 56 moves downwardly and acts upon an upwardly extending portion I24a of a lever I24 to move the lever in a counterclockwise direction. Lever I24 is pivotally mounted on shaft II! by its hub I25 (Figure 12) and is biased in a clockwise direction, as viewed in Figure 15, by a coil spring I26 mounted on its hub I25. Arm I240 of lever I24 is pivotally connected by a pivot pin I2I to a latch I28 extending forwardly in the machine. Latch I28 is biased in a downward direction with respect to arm I240 by a spring I29 mounted on pivot pin I2! (Figure 14). Latch I28 has a notch I28a (Figure 16) formed in its lower edge which is slightly wider than the thickness of interponent arm I28 and enga es a portion I201) of arm I29 extending to the right of arm I29, as viewed in Figure 12. The width of latch I28 (Figure 16) increases immediately behind notch I 28a to form a stop I28b. The forward end I280 of latch I28 is positioned above and actuated by trip cam I I I. The lower leg I2Ib of arm I2I of interponent H6 is also positioned above and actuated by trip cam III.

. Referring to Figures 15 and 16, when armature I23 moves downwardly, it moves lever I24 in a counterclockwise direction drawing latch I28 rearwardly. As latch I28 is engaged through notch I281; with arm I20 of interponent I I6 when lever I24 moves in a counterclockwise direction. interponent H6 is moved in the same direction. Movement of both latch I 28 and the leg I2Ib of interponent H8 (Figure 16) in this direction is permitted because at this time they are positioned over a cut-out portion I30 in trip cam When arm I20 of interponent II 8 (Figure 15) is moved rearwardly, it isdrawn. off the rear end 5a of pawl I I5, which is pivotally mounted on cam IIO by pivot pin I3I. A spring I32 biases pawl H5 in a counterclockwise direction so that it engages ratchet wheel I09. As the driving motor 32 was energized at the same time as solenoid 5B, gears I08 and ratchet wheel I09 (Figure 13) are being driven. Thus, when pawl I I5 drops intoengagement. with ratchet wheel I09, a driv- Ing connection is established between gear I08 and cam IIO. As cam III! is connected to shaft 58 through bushing H2 and pin II3, shaft 58 is driven. As shaft 58 turns, it drives sprocket gear 59 (Figure 5) which drives feeding mechanism 62 through link chain BI and sprocket gear 80.

When cam III] turns, trip cam III (Figures 13 and 16) turns with it in a counterclockwise direction, as viewed in Figure 16. Edge I33 of recess I 30 in cam I I I first strikes the under surface of. latch I28 moving it upwardly so that notch I28a is disengaged from interponent arm I20 freeing the interponent. As the cam continues toturn, it next strikes leg I2Ib of the interponent and moves the interponent in a clockwise direction so that leg I2Ia is positioned against spacing rod I22. The interponent is locked in this position as at this time the lower end of leg I,2Ib is riding on the outside surface of trip cam I I I and thus the pawl engaging edge I20a of arm I20 is locked during each cyclical operation in pawl engaging position. When cam III completes a, revolution, the lower edge I20a of interponent arm I20 strikes the rear end portion II5a of pawl II5 disengaging the pawl from ratchet wheel I09. This breaks the driving connection between gear I08 and shaft 58 (Figure 13) and locks cam IIO against further rotation. When solenoid 56 is deenergized, lever I24 is moved in a clockwise direction by spring I26, as viewed in Figure 15, until stop portion 12% (Figure 16) thereof strikes the rear surface of arm I20 and then latch I28 drops downwardly as arm I20 enters notch I28a. At this time the. machine is conditioned for its next operation.

If the solenoid is held down either through a. breakdown or through misuse of the machine, the machine will not dispense more. than the amount of. stamps purchased. By referring to Figures and 16, it will be seen that lever I24 is held in a tripped position as long as solenoid 58 is energized whereas the interponent is mechanically moved back to pawl-engaging position. Latch I28 could not move interponent IIS to a tripped position again as the connection between latch I28 and arm I (Figure 16) is not reestablished until latch I28 moves forwardly as lever I24 returns to its rest position. Thus, in

efiect. solenoid 56 could be energized continually without causing the clutch to be tripped more than once because an actuating connection could not be established between latch I28 and arm I20 unless armature I23 returns to its rest position.

It will be noted that a pin I34 is positioned beneath the rear end portion II5a of pawl II5, (Figure 15). When the interponent H6 is in its rest position engaging portion I I5a of pawl I [5, it. would not be possible to move cam III] in a counterclockwise direction because clockwise pivoting of pawl I I5 is limited by pin I34. To lock cam IIO against movement in a clockwise direction (Figure 15) when it is in a rest position and. to operate other mechanism in the vending machine, three-armed bellcrank 04 (Figure 8) is provided. Arm 84a; of bellcrank B4 is connected by a spring I35 to a pin I36 mounted on the castingv 16 forming the framework of the vending mechanism. Spring I35 resiliently urges movement of three-armed bellcrank 84, which is pivotally mounted on shaft I31, in a clockwise direction. Arm 64b of bellcrank 64 has a cam roller I38 mounted'on its rear end which engages the periphery of cam IIO. Cam IIO has a detent "0o thereon into which roller I38 drops at the end of each cyclical operation. The coaction of roller I38 and cam detent IIOa prevents movement of cam H0 in a counterclockwise direction, as viewed in Figure 8, and thus referring to Figure 15, at the end of each cyclicaloperation, cam III] is locked against movement in either a counterclockwise or clockwise direction.

It will be noted that the radius of cam IIO gradually increases from detent I I0a as the edge of cam III] is followed in a counterclockwise direction, as viewed in Figure 8. Thus as cam II 0 rotates in a clockwise direction after a driving connection has been established between gear I08 and cam II 0 through pawl II5 (Figures 13 and 15), bellcrank 84 is turned in a counterclockwise direction, as viewed in Figure 8. Another arm 840 of bellcrank 64 is connected by a pivot pin I39 to a link 65 extending upwardly to arm. 88. Link 85 is pivotally connected to arm '65 by pivot pin I40. Arm 66 is pivotally mounted by its hub. I4I (Figure 9) on a stud shaft I42 which. is mounted on the framework of the vending mechanism. Arm 68 (Figure 8) has a cam plate I45 made of an insulating material secured thereto by rivets I46. The upper edge of this plate slants downwardly in the machine and has a dual function in that when it moves upwardly its acts on a flange portion 942 of. arm 94b of lever 94 to move lever 94 in a clockwise direction while it also closes switch 61.

Switch 61 (Figures 8, 9, and. 10) includes a pair of members I41 and I48 made of resilient metal which are mounted by a bracket I5I on plate 8I (Figure 9), and are separated from each other by a piece of insulating material I52. A pair of screws I53 are provided to hold the switch in assembled relationship and these screws thread into a metal block I54 (Figures 8 and 10) which is insulated from member I41 by a piece of insulating material I55. Member I41 has an arm I41a which extends rearwardly therefrom and which contacts the metal hub 94c (Figure 9) to which coin switch contact member 15 is connected through shaft 90. Switch member I48 is connected to member 14 by screws 89, and thus switch members I41 and I48 are in parallel with contact members 14 and I5. Therefore, when closed they shunt members 14 and 15 to maintain the motor solenoid circuit after the coin is dropped.

When the cam plate I 45 (Figure 8) moves upwardly during a cyclical operation of the mechanism, it first strikes the lower end I41b of switch member I41. Plate I45 then earns the lower end I 4119 of member I41 to the right, as viewed in Figure 8, establishing contact between contact points I49 and I50. This connection shunts the electrical connection established by the coin between contact members I4 and I5. Next the upper end of cam plate I45 acts upon flange 94a of lever 94 to move contact member 15 in a clockwise direction, as viewed in Figure 8. This releases the coin held between contact members 14 and 15 permitting it to drop downwardly in the machine through chute I51 (Figure '7) into coin box 28 (Figure 3). It will be noted that arcing is prevented when the coin is released from its position between contact members I4 and 15 because electrical connection is established between memhers I 41 and I48 by contact points I49 and I before the coin is released. Thus bellcrank 64 (Figure 8), in addition to locking cam H0 in its rest position, also when actuated by cam IIO 9. releases the coin from the coin switch 48 and maintains the circuit of motor 32 closed throughout the cyclical operation of the clutch mechanism 51.

To prevent the insertion of a coin into coin slot I (Figure 1) after the supply of stamps in the stamp vending unit 2| has been exhausted, the shutter mechanism, generally indicated at 41 (Figures 5 and 20) is provided. The shutter I58 is the armature of a standard relay, generally indicated at I59 (Figure 20). Shutter I58 includes a flange portion I580. which is positioned behind slot I5 and is normally held to one side of the slot because the relay IE9 is energized whenever the vending mechanism is in condition for operation. Whenever the machine is disconnected from the source of current or the current fails, then relay I59 is deenergized and spring I6I moves the shutter to a closed position.

The operation of this shutter is also controlled by the feeler mechanism, generally indicated at 13 (Figure 8) so that when the supply of stamps is exhausted, the circuit to relay I59 (Figure 20) is broken, thus permitting shutter 158 to close. The feeler mechanism includes a pair of levers,

generally indicated at 62 and I63 (Figures 8 and 11') which are pivotally mounted on a shaft i66 extending transversely across and mounted on the framework of the vending mechanism. Between the upper ends of arms E6211 and I63a of levers I62 and I63 is a shaft I65 having a pair of feeler discs I66 and I 61 mounted thereon. Shaft I65 is rotatably mounted on the upper ends of arms I62a and M5311 and the edges-of discs I66 and I61 are aligned with grooves in roller 12, similar to groove I68, which are of greater width than the thickness of the discs. Discs 566 and I61 are prevented by the stamp strip from entering the grooves in roller 12 as long as stamps are positioned between the discs and the grooves in roller 12.

The levers I62 and I63 on which discs I86 and I61 are mounted are biased in a clockwise direction (Figure 8) by springs I69 and I10 (Figures 8 and 11) which are connected to the lower arms I62b and I631; of levers I62 and IE3. These springs are also connected to a flat plate I1I made of insulating material (Figures 8 and 11) secured to bosses on framework 16 by screws 390. The lower arms 16% and I63b of levers I62 and I63 are pivotally connected to a link I12 by a pivot pin I13 (Figure 8). Link I12 extends rearwardly through a hole in a bracket I19 secured to framework 16 and its rear end is so positioned that whenever bellcrank. 64 moves in a counterclockwise direction during a cyclical operation, it moves link I12 to the right, as viewedin Figure 8, thus moving the feeler discs I66 and I8! out of. contact with the stamp strip to permit the strip to be freely drawn from reel 10 under roll 12. Whenever the supply of stamps is exhausted, at the end of a cycle, levers I62 and I63 move in a clockwise direction (Figure 8), and discs I66 and I61 enter the grooves in roller 12.

Switch 68 includes a contact plate I80 mounted on di-electric plate HI and a contact point I19 mounted on a thin resilient member I 18 connected at its forward end by a rivet 30I to plate I1I. When discs I66 and I61 enter the grooves in roller 12, levers I62 and I63 acting through pivot pin I13 move link I12 to the left, as viewed in Figure 8. Link I12 has a di-electric .member I15 mounted thereon by rivets I16 and this member cams the downwardly extending rear end of switch member I18 .upwardly to separate contact plate I and contact point I19. As the circuit to the coin shutter mechanism 41 (Figure 5) is completed through this contact plate and contact point, whenever the contact point and contact plate are separated, the circuit to the relay in the coin shutter mechanism is broken, thus causing the coin shutter to close the coin intake opening I5 (Figure 1).

Referring to Figures 1'7, 18, and 19, in which the stamp feeding mechanism 62 is shown in detail, the mechanism is mounted on a casting I86 which in turn is mounted on the front of casting 16 which forms the framework of the stamp vending mechanism. The stamp roll I 81 is mounted on shaft I88 to which it is keyed, and shaft I88 is rotatably mounted in bearings on casting I86. Shaft I88 is driven by a sprocket wheel 60 (Figures 3 and 5) secured to its righthand end, as viewed in Figure 3. The stamp roll has five sets of pins I89 thereon which are spaced the same distance apart as the spacings between the perforations in the strip of stamps which they feed. To hold the stamp strip in" contact with pins I 89, a stamp roll cover, generally indicated at I90, is provided. This cover is pivotally mounted by a pin I9I on casting I 86 and when in a raised position, as shown in Figure 18, is held in that position by a, spring pressed detent I92 which enters a notch I93 in the hub portion of cover I90. Stamp roll cover I has a plurality of grooves I94 (Figures 17 and 19) cut into the surface of the cover which is positioned adjacent to the stamp roll. The pins I89 on roll I81 pass through these grooves as the stamp roll rotates.

Stamp roll cover I90 is provided with a shoulder I99a which coacts with the rear face I86a of casting I86 to limit the downward movement of the stamp roll cover. To maintain stamp roll cover I90 in a closed position, a catch, generally indicated at I95, is provided. This catch includes a finger piece I95a and a pair of arms I95b and I950 (Figure 19) which pass through casting I86 in slots I96 and I91. Arms I951) and I950 are provided with catches which latch under a catch plate I98 mounted on casting I86 above slots I96 and I91, and a spring and plunger 305 (Figure 17) is provided to hold catch I95 in a latched position.

The longitudinal alignment of the perforations in a strip of stamps weaves from side to side on a roll of stamps. Thus, when a strip of stamps is mounted upon pins I89, the'edges of'the stamp strip may move to the left or right, as viewed in Figure 19, as they are fed by roll I81. Because this weaving of the stamp strip as it is fed by the stamp roll is considerable, ample space is provided on each side of the stamp roll to permit this weaving without having the strip bind. To insure that the stamp strip will be properly aligned on the stamp roll at the beginning so that space is left at each side of the strip for weaving, a bracket, generally indicated at I99, is provided. a

Bracket 199 includes a pair of legs I99a and I991) connected by a center portion I990. Each of the legs of bracket I99 has a lug similar to lug I99d (Figure 18) thereon by means of which the bracket is pivotally mounted on a pivot pin I85. The center portion I990 of bracket I99 is pressed rearwardly byv a spring I84 which is mounted on pivot pin I 85. When the stamp cover is raised, spring I84 moves bracket I99 to the position it occupies in Figure 18 at which time the-lower ends of its legs I99a and H191) 11 extend below the outside edges of stamp roll I81 (Figure 19). At this time a strip of stamps may be mounted upon the stamp roll I81 using the legs I990. and I991? as guides.

When stamp roll cover I90 is moved to a closed position, a boss I83 (Figure 1''!) formed thereon strikes the rear face of the center portion I99c of bracket I99 pivoting the bracket in a clockwise direction (Figure 18) to move the lower ends of legs I99a and I991) upwardly so that they are no longer positioned adjacent the edges of the stamp roll I81 (Figure 17). Accordingly, bracket I99 assists the operator loading stamps into the machine in properly aligning the stamp strip upon the stamp roll I81. When the stamp roll cover is closed by the operator, then the legs of bracket I99 are moved upwardly to a position where they do not interfere with weaving of the stamp strip as it is fed by the stamp roll, thus insuring proper feeding of the stamp strip in spite of incorrect alignment of the perforations therein.

Referring now to Figure 21 in which the circuit of the vending machine is schematically shown, the circuit includes two subsidiar circuits, generally indicated at 205 and 206, for vending units 21 and 22 (Figure 3). As circuits 205 and 200 are similar, detailed description will be limited to circuit 205. Current is supplied to the circuits through power supply lines 201 and 208 which are connected to any suitable source of current. As stated hereinabove, the relay operated shutter mechanism, generally indicated at 41, is normally energized. The circuit to this relay comprises line 2I0 connected to power supply line 201 and to line 2| I. Line 2II is connected by a pigtail 2I4 to the armature 2I2 of relay 200 which is mounted on the rear wall of the vending machine housing II. Armature 2I2 is normally held by a spring (not shown) against contact point 2I3, thus completing a circuit between lines 2II and 2I5. Line 2I5 is connected through contact points 2I0 and 211 to a line 2I8 which is connected to switch 68. Through the contact points I39 and I of switch 38 and line 2I9 the circuit to one side of the coil 220 of relay 41 is completed. A line 22I connected to the opposite end of coil 220 is connected to line 222 through contact points 223 and 224. Line 222 is connected to power supply line 209 through line 225.

Thus, whenever the machine is in a rest position, the coil 220 of relay 4! is energized and thus the armature I58, the end of which forms a shutter for closing intake opening I5, is held in a position so that it does not close the intake opening.

When a coin drops into coin switch 48, it completes a circuit between contact members 14 and 15 which acts through relay 200 to trip the clutch solenoid 50 to break the circuit to relay 41, and to start motor 32. The circuit to contact member 14 of eoin switch 48 is through line 23I, contact points 232 and 233, line 230, and line 2I0. Contact member 15 is connected to power supply line 208 through line 234, contact points 235 and 230, line 231, the coil 238 of relay 200, and line 225. Thus, whenever a coin completes the circuit between contact members 14 and 15, coil 238 of relay 200 is energized and armature 2I2 of relay 200 moves downwardly, as viewed in Figure 21, to bridge the contact points 239 and 240.

When armature 2I2 moves downwardly, the

circuit to relay 41 is broken, preventing coins from being inserted into this unit of the vending machine until the vending transaction is completed. When the circuit between contact points 239 and 240 is made by armature 2I2, the circuit to solenoid 56 which trips the single revolution clutch is completed, as is the circuit to motor 32. The circuit to one side of coil 244 of solenoid 56 is completed through line 2I0, line 2II, pigtail 2I4, armature 2I2, contact point 239, line 200, contact points 24I and 242, and line 243. The opposite side of coil 244 is connected to power supply line 208 through line 22I, contact points 223 and 224, line 222, and line 225. The circuit to one side of motor 32 is completed from line 201 through lines 2I0 and 2| I, pigtail 2I4, armature 2I2, contact point 240, and line 245 and the opposite side of motor 32 is connected to power supply line 208 by line 246.

Thus when a coin completes the circuit between contact members 14 and 15, the coin intake opening is closed, solenoid 56 is energized to trip the single revolution clutch, and motor 32 is placed in operation. As described hereinabove, during the cyclical operation of the single revolution clutch, arm (Figure 8) moves upwardly to close contact points I49 and I50 and to move contact member 15 to release the coin positioned between contact members 14 and I5. Engagement between contact members I49 and I50 (Figure 21) shunts the contact made by contact members 14 and 15 and as the contact between contact points I49 and I50 is maintained throughout the cyclical operation of the clutch, the circuit to solenoid 58 and motor 32 is maintained during the cyclical operation. At the end of a cyclical opera tion, contact between contact points I49 and I50 is broken when arm 68 (Figure 8) moves downwardly. This breaks the circuit to the coil 238 of relay 200 thus permitting the armature 2I2 to move back into contact with contact point 2I3. This completes the circuit again to the coil 220 of relay 41 moving the armature of this relay to a position where a coin may again be fed into the machine through intake opening I5 (Figure 1).

As pointed out hereinabove, when the supply of stamps is exhausted, mechanism in the machine operates to separate contact points I19 and I80. This breaks the circuit to the coil 220 of relay 41 thus closing intake opening 15 and preventing users from inserting coins into the vending unit in which the supply of stamps is exhausted.

In operation, whenever a coin drops down pay chute 52 (Figure 5) it engages members Hand 15 to complete the circuit to motor 32 (Figure 2) and solenoid 5B (Figure 8). Motor 32 then drives gear I08 in clutch 51 (Figure 7) through sprocket gear 35 (Figure 2), link chain 31, sprocket gear 38, shaft 34 (Figure 4) and gear 42. When solenoid 58 (Figure 15) is energized, its armature presses downwardly upon lever I24 pivoting it in a counterclockwise direction. Member I24 acting through latch I28 draws the arm I20 of interponent H0 rearwardly. This permits spring I32 to move pawl H5 in a counterclockwise direction and engage ratchet wheel I09 which is connected to gear I08. Thus as gear I08 is driven, it drives cam IIO on which pawl H5 is mounted and as cam H0 is connected to shaft '58, sprocket gear 59 (Figure 5) is driven. Sprocket gear 59 acting through link chain BI drives sprocket gear 60 a complete revolution.. As there are five sets of pins on the stamp roll I81 (Figure 1'7) five stamps are fed through the stamp vending opening I1 (Figure 1).

As cam IIO makes a revolution in a clockwise direction, as viewed in Figure 8, it pivots bellcrank 64 in a counterclockwise direction. As bellcrank 64 moves in a counterclockwise direction, it acts through link 65 to raise arm 06. Arm 86 acting through plate I45 first closes switch 61 by camming contact point I49 into engagement with contact point I50 and then acting through lever 94 pivots contact member 15 in a clockwise direction (Figure 8) to release the coin in the coin switch so that it drops downwardly to the coin box 28 (Figure 3) through chute I51 (Figure 7).

As cam II rotates in a counterclockwise direction, as viewed in Figure 15, trip cam I i I (Figure 16) rotates with it. The edge I33 of recess I30 in trip cam III acts upon latch I28 to break the connection between this latch and interponent arm I20. Next edge I33 of trip cam III pivots interponent I I6 in a clockwise direction, as viewed in Figure 16, so that the edge I29a of arm I20 is in a pawl engaging position. When the electrical circuit to solenoid 56 (Figure 15) is broken, then spring II8 moves lever I24 in a clockwise direction so that latch I28 reengages arm I20 of interponent I I6. At the completion of a cyclical operation, interponent IIB engages pawl II (Figure to disengage it from ratchet wheel I09. The unit at this time is conditioned for another vending transaction.

At the same time that the circuit is completed to solenoid 56 (Figure 15) and to motor 32 (Figure 2) the circuit to coin shutter 42 is interrupted to permit the coin shutter I58 (Figures 5 and to close the coin intake opening I5. The circuit to the relay operated shutter I58 is also interrupted when the supply of stamps is exhausted. This is accomplished by the entrance of feeler discs I86 and I61 (Figure ll) into grooves in roller 12 (Figure 8). This permits levers I82 and I63 to move link H2 rearwardly and break the contact between contact point I19 and contact plate I80. As the circuit to the relay controlled shutter I 58 (Figure 5) is completed through contact point I19 and contact plate I80 when these points are separated then shutter I 58 moves to a closed position.

To permit the stamp strip to be easily fed by stamp roll I81 (Figure 8) discs I 58 and I81 (Figures 8 and 11) are moved out of contact with the stamp strip passing under roller 12 during each cyclical operation. This is accomplished by the arm 64a of three-armed bellcrank 64 which acts upon the rear end of link I12 to pivot levers I62 and I63 in a counterclockwise direction, as viewed in Figure 8.

Stamps are fed through the stamp feeding mechanism 62 (Figure 17) by a stamp roll I81. This stamp roll is provided with a cover I90 which may be moved between closed and open positions, as shown in Figures 17 and 18. When the cover is open (Figure 18), then the legs on bracket I99 (Figure 18) are positioned adjacent the outer edge of the stamp roll to assist the operator mounting the stamp strip in properly aligning the stamp strip on pins I89. When the cover I90 is closed, it pivots bracket I99 in a clockwise direction, as viewed in Figure 18, to move the legs of bracket I99 upwardly to the position they occupy in Figure 8 to permit the stamp strip to be fed by the roll I81 without binding if the strip weaves back and forth sideways on the stamp roll 14 due to longitudinal misalignment of the perforations therein.

Thus practical and efficient mechanism has been disclosed which is entirely automatic in operation. The mechanism is provided with a type of clutch which prevents the issuance of more than the number of stamps purchased in spite of breakdowns of the clutch mechanism caused by either misuse or faulty operation of the machine. Furthermore, the mechanism is compact and is constructed in a simple and practical manner which insures accurate operation of the mechanism over a long period of time under conditions of extended usage. Thus, it will be seen that the several objects hereinabove mentioned, as well as many others, have been successfully accomplised.

As many possible embodiments may be made of the above invention and as many changes might be made in the embodiment above set forth, it is to be understood that all matter hereinbefore set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

What is claimed is:

1. In a coin controlled vending mechanism, in combination, a coin switch, a single revolution clutch, means for driving said clutch, means for feeding a strip of stamps, means operatively connecting said clutch and said stamp strip feeding means, interponent means for holding said clutch in a disengaged condition, means controlled by said coin switch for moving said interponent means out of a disengaging position, and a cam driven by said clutch for disengaging said interponent means from said switch controlled means after said interponent means has been moved to a tripped position and means for returning said interponent means to a clutch disengaging position.

2. In coin controlled vending mechanism, in combination, a coin switch, a single revolution clutch, means for driving said clutch, means for feeding a strip of stamps, means operatively connecting said clutch and said stamp strip feeding 7 means, interponent means for holding said clutch in a disengaged condition, means controlled by said coin switch for movingsaid interponent means out of a disengaging position, and a cam driven by said clutch for disengaging said interponent means from said switch controlled means after said interponent means has been moved .to a tripped position and for moving said interponent means back to clutch disengaging position.

3. In coin controlled vending mechanism, in

' combination, a coin switch, a single revolution clutch, means for feeding a strip of stamps, means operatively connecting said stamp strip feeding means and said clutch, a solenoid controlled by said coin switch, lever means controlled by said solenoid, clutch tripping means, means forming a detachable connection between said lever means and said clutch tripping means, said lever means when operated by said solenoid moving said clutch tripping means to permit engagement of the driving and driven portions of said clutch, means for breaking said connection between said lever means and said clutch tripping means after said clutch has been tripped, and means for returning said clutch tripping means to a position where it disengages said clutch at the end of a single revolution regardless of the position of said solenoid or said lever.

4. In coin controlled vending mechanism, in combination, a coin switch, a single revolution clutch. :means "for feeding a strip of stamps, means operatively connecting said stamp strip iee'ding means and said clutch, a solenoid controlled by said coin switch, lever means controlled by said solenoid, clutch tripping means, means forming a detachable connection between said lever means and said clutch tripping means, said lever means when operated by said solenoid moving said clutch tripping means to permit engagement of the driving and driven portions or" said clutch, means for breaking said connection between said lever means and said clutch tripping means after said clutch has been tripped, means for returning said clutch tripping means to a position where it disengages said clutch at the end of a single revolution regardless of the position of said solenoid or said lever, and means for returning said lever to a position where it reengages said clutch tripping means when said solenoid is deenergized.

5. In coin controlled vending mechanism, in combination, a coin intake slot, shutter means for closing said slot, a coin switch, stamp strip feeding mechanism for feeding a stripof stamps, a cyclically operated clutch, means for driving the driving portion of said clutch, said coin switch controlling the operation of said clutch,

Lfeeler means contacting said strip of stamps, said feeler means being operatively connected to said shutter to close said shutter when said strip of stamps is exhausted, and means operated by said clutch for moving said feeler means out of contact with said stamp s rip during each cyclical operation.

6. In coin controlled vending mechanism, in combination, a coin intake slot, shutter means for closing said slot, a coin switch, stamp strip feeding mechanism including single revolution clutch mechanism for feeding a strip of stamps, said coin switch controlling the operation of said stamp feeding mechanism, feeler means contacting said strip of stamps, said feeler means being operatively connected to said shutter to close said shutter when said strip of stamps is exhausted, and linkage connecting said clutch mechanism and said 'feeler means, said single revolution clutch mechanism acting through said linkage to move said feeler means out of contact with said stamp strip when said stamp strip is being fed.

7. In coin controlled vending mechanism,;in combination, a coin intake slot, a relay operated shutter for closing said slot, stamp strip feeding mechanism for feeding stamps from a coil oi stamps, a coin switch, means for driving said feeding mechanism, said coin switch controlling the operation of said last-mentioned means, a roller, said stamp passing over said roller between said coil and said feeding mechanism, a 'fe'elermember resilient-1y urged toward a groove in "said roller, said strip of stamps preventing the entrance of said feeler member into said groove, "switch means controlling the operation of said relay and controlled by said feeler member, said feeler member moving into said groove whens'a-id stamp strip is exhausted to cause said shutter to close said intake slot, and means operated by said stamp feeding mechanism for moving said feeler means out of contact with said stamp strip when stamps are being fed 8. Incoin controlled vending mechanism, in combination, a coin intake slot, relay operated shutter means for closing said slot, a coin switch. stamp strip feeding mechanism for feeding a strip of stamps, said coin switch controlling the operation of said stamp feeding mechanism, feeler means contacting said strip of stamps,

switch means, and means operatively connecting said feeler means and said switch means, said feeler means acting through said connecting means and said switch means to close said-shutter means when said strip of stamps is exhausted, andmeans operated by said stamp feeding mechanism for moving said feeler means out of contact with said stamp strip when stamps are being fed.

9. In coin controlled vending mechanism, in combination, a ccinintake slot, a relay operated shutter for closing said slot, a coin switch, stamp strip feeding mechanism for feeding stamps from a coil of stamps, means for driving said feeding mechanism, a roller, said stamp strip passing over said roller between said coil and said feeding mechanism, a feeler member resiliently urged toward a groove in said roller, said strip of stamps preventing the entrance of said ieeler member into said groove, switch means controlling the operation of said relay and controlled by said feeler member, a cam driven by said driving means, means operatively connecting said feeler member and said cam, said cam acting through said last-mentioned means to move said feeler member out of contact with said strip of stamps when stamps are being fed, said feeler member being operatively connected to said shutter to close said shutter when said strip of stamps is exhausted.

10. In coin controlled vending mechanism, in combination, a coin switch, a single revolution clutch including driving and driven portions, means for feeding a strip of stamps, means operatively connecting said stamp strip feeding means and said clutch, a solenoid controlled by said coin switch, lever means actuated by said solenoid, clutch tripping means, means'forming a detachable connection between said lever means and said clutch tripping means, said lever means when operated by said solenoid moving said clutch tripping means to permit the engagement of the driving and driven portions of said clutch and cam, means for breaking said connection between said lever means and said clutch tripping means after said clutch has been tripped, said clutch tripping means being actuated by said cam means to return said clutch tripping means after tripping to a position where it disengages the driving and driven portions of said clutch at the end of a single revolution regardless of the position of said solenoid or said lever.

11. In coin controlled vending mechanism, in combination, a coin switch, a single revolution clutch including driving and driven portions, stamp strip feeding mechanism for feeding a strip of stamps, means forming 'a driving connection between said mechanism and the driven portion of said clutch, lever means, electrically controlled means for moving said lever means to operative position, said coin switch when closed by a coin completing the circuit to said last mentioned means whereby said coin switch controls the operation of said lever means, clutch trippingmea-ns, means forming a detachable connection between said lever means and said clutch tripping means, said lever means when actuated by said switch'movingsaid clutch tripping means to permit engagement of the driving and driven portions of said clutch, means for breaking the connection between said lever means and said clutch tripping means after said clutch has been tripped, and means for returning said clutch tripping means to a position where it disengages said clutch at the end of a single revolution regardless of "the position of said lever means.

12. In coin controlled vending mechanism, in combination, a coin switch, a single revolution clutch including driving and driven. portions, stamp strip feeding mechanism for feeding a strip of stamps, means forming a driving connection between said mechanism and the driven portion of said clutch, lever means, electrically controlled means for moving said lever means to operative position, said coin switch when closed by a coin completing the circuit to said last mentioned means whereby said coin switch controls the operation of said lever means, clutch tripping means, means forming a detachable connection between said lever means and said clutch tripping means, said lever means when actuated by said switch moving said clutch tripping means to permit engagement of the driving and driven portions of said clutch, means for breaking the connection between said lever means and said clutch tripping means after said clutch has been tripped, a cam, and means operatively connecting said cam to the driven portion of said clutch, said cam actuating said clutch tripping means to return said tripping means to a position where it disengages said clutch at the end of a single revolution regardless of the position of said lever means.

13. In coin controlled vending mechanism, in combination, a coin switch, clutch means, means for driving said clutch means, a coin track, said coin switch including two electrical contact members forming a part of an electrical circuit to and controlling the operation of said clutch means, said coin switch intercepting coins passing down said coin track, means for releasing coins from said coin switch, switch means in said circuit for shunting the electrical contact established by a coin positioned between said contact members, arm means operatively connected to the driven side of said clutch, means operatively connecting said arm means to said coin releasing means and said last-mentioned switch means, said arm being operated by said clutch to release coins from said contact members and I IEO feeding of stamps when the end of said strip is reached, and means operated by said clutch for moving said feeler means out of contact with said stamp strip during each operating cycle.

14. In coin controlled vending mechanism, in combination, a coin switch, clutch means, means for driving said clutch means, a coin track, said coin switch including two electrical contact members forming a part of an electrical circuit to and controlling the operation of said clutch means, said contact members intercepting coins passing down said coin track, one of said coin switch members being pivotally mounted, a switch mounted adjacent said pivotally mounted contact member and disposed in said circuit for shunting the electrical contact established by a coin positioned between said contact members, a pivotally mounted arm, linkage connecting said arm to the driven side of said clutch, said arm having a contact portion one section of which first engages said shunt switch and another section of which then engages said pivotally mounted switch member, whereby said arm directly operates both said pivotally mounted contact member and said shunt switch, said arm being operated by said clutch through said linkage to release coins from said contact members and to close said shunt switch prior to the release of a coin from said contact members, stamp strip feeding mechanism for feeding a strip of stamps, and means operatively connecting said clutch means and said stamp strip feeding mechanism.

CHRISTIAN M. GOT'ISCHAU.

REFERENCES CITED The following references are of record in the file of this patent:

UN ITED STATES PATENTS Number Name Date 397,975 De Redon Feb. 19, 1889 428,751 Glass May 27, 1890 577,533 Miranda Feb. 23, 1897 1,784,585 Eller Dec. 9, 1930 1,847,988 Semel Mar. 1, 1932 1,850,443 Brahy Mar. 22, 1932 1,949,541 Hartman Mar. 6, 1934 2,062,298 Eitzen Dec. 1, 1936 2,249,236 Tratsch July 15, 1941 2,258,912 Steen et a1 Oct. 14, 1941 2,264,647 Stearns Dec. 2, 1941 

